Heating stove



FIG. 1 is a front elevation of a heating stove embodying our new design;

FIG. 2 is a left side elevation thereof, the right side elevation being a mirror image except for the ash door latch and hinge;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and

FIG. 5 is a rear elevation thereof. 

The ornamental design for a heating stove, as shown. 